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Metabolically-healthy obesity is associated with higher prevalence of colorectal adenoma.


ABSTRACT: The risk of colorectal adenoma (CRA), an important precursor of colorectal cancer, is largely unknown among obese individuals without obesity-related metabolic abnormalities, a condition described as metabolically-healthy obese (MHO). The aim of this study was to examine the association among metabolic status, the different categories of body mass index (BMI), and CRA in a large cohort of adults.We analyzed the association among metabolic status, BMI categories and CRA in asymptomatic adults who underwent a first-time colonoscopy as part of the comprehensive health check-up program at the Health Promotion Center of Samsung Medical Center, from January 2005 to December 2012. Being metabolically healthy was defined as lacking any metabolic syndrome components and having a homeostasis model assessment of insulin resistance <2.5.The prevalence of "any," "multiple," and "high-risk" CRA was 25.6%, 8.3%, and 4.4% among 9,182 metabolically-healthy participants, and 35.9%, 12.5%, and 7.0% among 17,407 metabolically-unhealthy participants, respectively. Increased BMI showed a significant dose-dependent relationship with the prevalence of "any," "multiple," and "high-risk" CRA, in both metabolically-healthy and unhealthy participants. In multivariable-adjusted models that accounted for potential confounders including age, sex, smoking, alcohol, first-degree family history of colorectal cancer, and aspirin use, the odds ratio (OR) for any CRA comparing MHO with metabolically-healthy normal-weight (MHNW) participants was 1.25 (95% confidence interval (CI), 1.09-1.43). Further adjustment for metabolic components associated with obesity did not significantly change the association. Similarly, the ORs for multiple CRAs and high risk CRA were higher in MHO participants than MHNW participants [ORs (95% CI), 1.63 (1.31-2.04) and 1.53 (1.14-2.04), respectively].The MHO phenotype was closely associated with higher prevalence of CRA, including high-risk adenoma. This finding supports the conclusion that MHO increases the risk of colorectal cancer.

SUBMITTER: Sinn DH 

PROVIDER: S-EPMC5479542 | biostudies-other | 2017

REPOSITORIES: biostudies-other

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Metabolically-healthy obesity is associated with higher prevalence of colorectal adenoma.

Sinn Dong Hyun DH   Min Yang Won YW   Son Hee Jung HJ   Rhee Poong-Lyul PL   Paik Seung Woon SW   Hong Sung Noh SN   Gwak Geum-Youn GY  

PloS one 20170621 6


<h4>Background</h4>The risk of colorectal adenoma (CRA), an important precursor of colorectal cancer, is largely unknown among obese individuals without obesity-related metabolic abnormalities, a condition described as metabolically-healthy obese (MHO). The aim of this study was to examine the association among metabolic status, the different categories of body mass index (BMI), and CRA in a large cohort of adults.<h4>Methods</h4>We analyzed the association among metabolic status, BMI categories  ...[more]

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